This article is about p Puppis. For P Puppis, see HD 63922. Not to be confused with ρ Puppis. p Puppis (HD 60863) is a star system the constellation Puppis. This system consists of a B8V[3] (blue main-sequence) star and a secondary star at 7.4 AU, much smaller than the primary, as well as farther companions.[6] Its apparent magnitude is 4.65[2] and it is approximately 222 light years away based on parallax.[1]
Quick Facts Observation data Epoch J2000 Equinox J2000, Constellation ...
HD 60863
Location of HD 60863 (circled) |
Observation data
Epoch J2000 Equinox J2000 |
| Constellation |
Puppis |
| Right ascension |
07h 35m 22.89366s[1] |
| Declination |
−28° 22′ 09.5735″[1] |
| Apparent magnitude (V) |
4.65[2] |
| Characteristics |
| Spectral type |
B8V[3] |
| U−B color index |
-0.43[4] |
| B−V color index |
-0.12[4] |
| Astrometry |
|---|
|
|---|
| Radial velocity (Rv) | +3.30[5] km/s |
| Proper motion (μ) | RA: -65.93[1] mas/yr
Dec.: -19.73[1] mas/yr |
| Parallax (π) | 14.72±0.67 mas[1] |
| Distance | 220 ± 10 ly
(68 ± 3 pc) |
| Absolute magnitude (MV) | 0.46[2] |
|
|---|
| Orbit[6] |
|---|
| Primary | A |
| Companion | B |
| Period (P) | 10 years |
| Semi-major axis (a) | 7.4 AU |
| Details |
|---|
| A |
|---|
| Mass | 3.1±0.1[6] M☉ |
| Radius | 2.4[6] R☉ |
| Luminosity | 120[7] L☉ |
| Surface gravity (log g) | 4.29[8] cgs |
| Temperature | 12,680[7] K |
| Rotational velocity (v sin i) | 203[7] km/s |
| Age | 110+50
−20[6] Myr |
| B |
|---|
| Mass | 0.58+0.0
−0.3[6] M☉ |
| Radius | 0.54[6] R☉ |
| Temperature | 4,000[6] K |
| Other designations |
|---|
| p Puppis, CD-28°4566, CCDM J07354-2823A, GC 10178, GSC 06551-03461, HIP 36917, HR 2922, HD 60863, SAO 174058, WDS J07354-2822A |
| Database references |
|---|
| SIMBAD | data |
Close
In addition to the inner pair, there are the distant companions HIP 36890, at apparent magnitude 7.83[9] and projected separation of 38,700 AU, which is itself an astrometric binary, and a faint white dwarf at a distance of 1,300 AU. This make p Puppis a five-star system.[6]
